Reinforcement ring



FIG. 1 is a top perspective view of a reinforcement ring showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a right side elevation view thereof, where a left side elevation view, a front elevation view, and a rear elevation view thereof each is the same as the right side elevation view.

The broken lines in the drawings illustrate portions of the reinforcement ring that form no part of the claim. 

CLAIM We claim the ornamental design for a reinforcement ring, as shown and described. 